- CMD.（Ability ok, may be have bug or not...）
- File transmission.（profecting..）
- Support download file now, the file's size don't be too big.
- (upload file is profecting...)
- HearBeat.（OK）
Client and Server both use IOCP modle to connection. Server is single document mode， and client is dialog mode（profecting..）.
- Big file transport has question in memory alloc.
- Use zlib on data transport.
- Process manager.
- Get screen.